Research On Power System Investment Evaluation Based On Set Pair Analysis Theory Under New Electricity Reform

Since the promulgation of the No.9 document of the electric power reform in 2015,the trend of new power reform has spread throughout the country,and sales companies have sprung up.The new power reform has brought huge impacts and challenges to the grid companies.In recent years,the state has promulgated the “Provincial Power Grid Pricing and Pricing Method”,and the grid company's profit model has changed from the original earning price to the rated network fee model.The operating income has dropped significantly.According to the provisions of the Measures,grid companies are expected to increase their revenues,mainly by expanding the scale of effective assets.Therefore,under effective power demand,grid companies need to increase investment in fixed assets.Under the new transmission and distribution price verification method,the revenue of power grid enterprises has shrunk.Under the background of new power reform in the power industry,this paper determines the factors affecting grid investment under the new situation by reading a large number of literatures related to grid investment,and constructs the investment evaluation model of grid enterprises under the new power reform theory based on the theory of net present value of investment.The grid investment evaluation model based on the set pair analysis method is established,and the model is used to quantify the uncertainty factor of the grid investment under the new electricity reform.After that,the results of the connection calculation of each project investment plan are obtained,and the set of the net present value of each plan is less than 0,and the best investment plan is obtained for the event.Finally,using the case of G network company to verify the applicability and feasibility of the model,it can provide an appropriate reference for the investment decision of the grid enterprise under the new power reform.The main innovations of this paper are based on the change of the profit model of the new power grid.The set pair analysis method is used to construct the investment evaluation model of the grid project.This method effectively avoids the problem that the research data is insufficient to fully quantify the uncertainty factors.And the model constructed can accurately screen out the best grid investment plan.